Where should I start?

Cley, welcome aboard and to the drag racing/performance bug.

The torque converter needs to have some "Known" specs of the other parts of the car, engine and intended gear ratio before ordering one. There are a few really good places out there to r torque converters.

I gondownnthe street for mine. Nice to have a local place worth there salt;
ProTorque High Performance Drag Racing Torque Converters

But there is also Frank Lupo and .... a half dozen others.

Also, with 3.23 gears, adding a tall tire like you listed above will just make you slower. Ether up the ratio (3.91 - 4.10) or drop the tire diameter. (26 inch instead of nearly 28.)

May I suggest a game plan before you proceed any further? Make the plan to get into the low low 12's first. (Track times)
Then deduct a 1/2 for the street.

Go to the racers forum and view the sticky posts up top. There are posts on how our forum members have gotten into the thread titles bracket time.

The thread(s) were sticked up there to help people achieve a goal without busting a brain cell or there wallet.
Enjoy!